Not working

hi, im struggling to get it working.
i got the following message
Error: No meta boxes are available!
Warning: The following meta box are not available: "profile_fields".

code looks like

 add_action( 'rwmb_meta_boxes', function( $meta_boxes ) {
  $meta_boxes[] = array(
      'title' => 'Contact Info',
      'type'  => 'user', // THIS: Specifically for user
      'id'     => 'profile_fields',
      'fields' => array(
          array(
              'name' => 'Mobile phone',
              'id'   => 'mobile',
              'type' => 'tel',
          ),
          array(
              'name' => 'Work phone',
              'id'   => 'work',
              'type' => 'tel',
          ),
          array(
              'name' => 'Address',
              'id'   => 'address',
              'type' => 'textarea',
          ),
          array(
              'name'    => 'City',
              'id'      => 'city',
              'type'    => 'select_advanced',
              'options' => array(
                  'hanoi' => 'Hanoi',
                  'hcm'   => 'Ho Chi Minh City'
              ),
          ),
      ),
  );
  $meta_boxes[] = array(
      'title' => 'Custom avatar',
      'type'  => 'user', // THIS: Specifically for user

      'fields' => array(
          array(
              'name'            => 'Upload avatar',
              'id'              => 'avatar',
              'type'            => 'image_advanced',
              'max_file_uploads' => 1,
          ),
      ),
  );

  return $meta_boxes;
} );

and in template: echo do_shortcode('[mb_user_profile_info id="profile_fields"]');